Citations
Index diagram Great Britain (North) List of trigonometrical points, 1931-10 - 1940, GBR/3296/Maps/CCSA.MOD_L115_31, MOD_L115_31. Cambridge University Library. |
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Index diagram Great Britain (North) List of trigonometrical points, 1931-10 - 1940, GBR/3296/Maps/CCSA.MOD_L115_31, MOD_L115_31. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/241427 Accessed November 16, 2024. |